For a module over a commutative ring , its character module is the additive-group dual into , with action . The group is an injective cogenerator of abelian groups. The natural adjunction sends to the balanced pairing .
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A Character module can refer to various concepts depending on the context in which it is used. Below are a few interpretations: 1. **Programming**: In programming, particularly in languages like Python or Java, a character module might refer to a library or package that provides functionality for managing character strings and character encodings. For example, Python has built-in functions for manipulating strings (which are collections of characters) and modules like `string` that provide string constants and utility functions.